NAS-IP-address == "10.1.2.0/24" allowed?

[Min Qiu]

Hi,

Again, newbie question that I failed to find the anwser 
from FAQ or wiki.

I would like to restrict user login by NAS-IP-address or
fqdn if possible.  Therefore I can restrict user to login 
a group of devices.

user1  Auth-Type := Local, User-Password == "sceret", 
       NAS-IP-address =="10.1.2.0/24"
...

It works if NAS-IP-address == "10.1.2.3", but that will
require ~250 entries in users file.  Can it be group into
/24 or is NAS-Network-address exist?  How about using DNS 
name, something like

user1  Auth-Type := Local, User-Password == "sceret", 
       NAS-fqdn =~ /*.(core|edge).domain/
...

Thanks a lot,

Min
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